5. Viral Meningitis
Like the herpes simplex virus, viral meningitis is an infection that can cause the facial nerve to swell. Inflammation puts pressure on the facial nerve, and the swelling causes damage or constriction and interrupts correct messaging from the brain to the facial muscles. Pressure on the facial nerve or any other nerve is always risky, as it can lead to ischemia. Ischemia restricts blood to the nerve cells, and consequently, these nerve cells do not get enough oxygen.
Viral meningitis is the most common type, but luckily, it is not life-threatening. Meningitis is so-called because it affects the Menges, or membrane protecting the brain and spinal cord. There are several bacterial variations that cause meningitis. Listeria is one of them, and this is why it’s so important to curb outbreaks. It is also why pregnant women are often advised not to eat processed meats, where the disease is found. It is also found in certain cheeses.